<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 添加分类按钮区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入搜索内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
            @keyup.enter.native="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="2">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- 商品列表区域 -->
      <el-table :data="goodsList" border stripe width="100%">
        <el-table-column label="#" type="index"> </el-table-column>
        <el-table-column label="商品名称" prop="goods_name"> </el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="120">
        </el-table-column>
        <el-table-column label="商品数量" prop="goods_number" width="90">
        </el-table-column>

        <el-table-column label="商品重量" prop="goods_weight" width="90">
        </el-table-column>
        <el-table-column label="创建时间" width="190">
          <template slot-scope="scope">
            {{ scope.row.add_time | time }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="140">
          <template slot-scope="scope">
            <!-- 修改 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="small"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="small"
              @click="removeGoodsById(scope.row.goods_id)"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[5, 10, 15, 20]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>
<script>
export default
  {
    data() {
      return {
        // 获取商品列表的参数对象
        queryInfo: {
          query: '',
          // 当前的页数
          pagenum: 1,
          // 当前煤业显示多少条数据
          pagesize: 10
        },
        // 获取商品列表数据
        goodsList: [],
        // 总数据条数
        total: 0,

      }
    },
    created() {
      this.getGoodsList()
    },
    methods: {
      // 根据分页获取对应的商品列表
      async getGoodsList() {
        const { data: res } = await this.$http.get('goods', {
          params: this.queryInfo
        })
        if (res.meta.status !== 200) {
          return this.$message.error('获取商品列表失败')
        }
        this.goodsList = res.data.goods
        this.total = res.data.total
      },
      handleSizeChange(newSize) {
        this.queryInfo.pagesize = newSize
        this.getGoodsList()
      },
      handleCurrentChange(newPage) {
        this.queryInfo.pagenum = newPage
        this.getGoodsList()
      },
      //   // 监听添加用户对话框的关闭事件
      //   addDialogClosed() {
      //     this.$refs.addFormRef.resetFields()
      //   },

      //   // 根据ID删除对应的商品信息
      async removeGoodsById(id) {
        // 弹框询问商品是否删除数据
        const confirmResult = await this.$confirm('此操作将永久删除该商品数据, 是否继续?', '提示',
          {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
          }
          // 如果商品取消了删除，则返回值为字符串 cancel
        ).catch(err => err)

        // 如果商品确认删除，则返回值为字符串 confirm
        // console.log(confirmResult)
        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }
        const { data: res } = await this.$http.delete('goods/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除商品失败！')
        }
        //判断当前页数是否是无数据, 是无则跳转上一页
        if (this.goodsList.length === 1) {
          this.queryInfo.pagenum = this.queryInfo.pagenum === 1 ? 1 : this.queryInfo.pagenum - 1
        }
        this.$message.success('删除商品成功！')
        this.getGoodsList()
      },
      goAddpage() {
        this.$router.push('/goods/add')
      }
    }
  }
</script>

<style lang="less" scoped>
</style>>